A radiant-cut fancy yellow diamond and diamond ring

The radiant-cut fancy yellow diamond, weighing 5.05 carats, between octagonal borders and a trifurcated hoop of brilliant-cut diamonds, some of pink hue, mounted in 18k white and rose gold, ring size 6½. Estimate: HK$450,000 - 550,000, $58,000 - 71,000. Unsold.

Accompanied by a certificate from GIA, stating that the 5.05 carats diamond is fancy yellow, natural colour and VS1 clarity. Report number 16826348, dated 30th January 2008.

Bonhams. Fine Jewellery and Jadeite and Modern Wristwatches, 21 May 2009. Island Shangri-La Hong Kong Hotel, Admiralty, Hong Kong www.bonhams.com